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休伦超群主要分布在休伦湖北岸的萨得伯里和科博尔特地区。我们这次主要考察萨得伯里一带的埃斯帕诺拉、埃利奥特湖和萨得伯里三个地区。休伦超群年龄约为25-21亿年,属下元古或阿菲宾代的下部,其上被白水群不整合超覆。白水群的年龄约为18.4亿年,但一般认为这是该群的最小年龄。休伦超群通常划分为四个群和十二个组,总厚达10000米以上。四个群是埃利奥特湖群、霍古湖群、奎尔克湖群和科博尔特群(见图1)。在许多地方,休伦超群底部下伏有发育太古花岗质岩石之上的古土壤层,是由典型的绿色腊状绢云母和石英组成。据古土壤的地球化学研究表明,这种古土壤主要是在还原
Huron Superman is mainly distributed in the northern shore of Lake Huron, the Sadeburi and Kobolt area. This time we mainly visited Esporonola, Lake Elliot and Sadebury in the area of Sadebury. Huron superior age of about 25210000000 years, under the palaeontology or the lower part of the Afibin generation, which was overwhelmed by the unconformity of the Baishui group. The age of the Baishui group is about 1.84 billion years, but it is generally considered to be the youngest age of the group. Huron Maria is usually divided into four groups and twelve groups, with a total thickness of 10,000 meters or more. The four groups are the Elliott Lakes, the Huohu Lakes, the Quilke Lakes and the Copeaults (see Figure 1). In many places, the bottom of the Huron is underlain by an ancient soil layer of developed Archean granitic rocks, which is composed of typical green waxy sericite and quartz. According to ancient soil geochemical studies show that this ancient soil is mainly in the reduction